A Biophysical Approach for a Human-aging Cohort

Abstract

This work aims to deepen demographically understanding a human aging by constructing each backward human-aging cohort of male and female as a longitudinal study and by analyzing such constructed demographic data with the lifespan equation (the so-called diffusion model), which has biological backgrounds. To demonstrate a validity of the results, the author employed some predictions of Vaupel (2010) as a reference in comparison with author’s results. In this study the results implied that the aging cohort of male and female may be composed of at least three components (or three sub-cohorts) and that each component has approximately the same aging rate. In addition, the higher the extension of the lifespan became, the higher a ratio of the three components was, and the most extended component was beyond 80%. These results strongly support one side in two predictions that were proposed by Vaupel.